Ultrasonic nebulizer



FIG. 1 is an exploded perspective view taken from the front and left side of an ultrasonic nebulizer showing my new design;

FIG. 2 is a perspective view taken from the top, rear and right side thereof; and

FIG. 3 is a bottom plan view of the top portion thereof. 

The ornamental design for an ultrasonic nebulizer, as shown. 